Fuzzles will soon be ready for the joust, thanks to this armor on sale by eBay member mightys0x. This is a steel helmet and set of chain mail armor. Mightys0x writes:

Is your pet guinea pig tired of wandering around the house unarmored and vulnerable? Do they get picked on by other guinea pigs? Has your guinea pig ever wanted to go with you to a Renaissance Faire but had nothing to wear?

Note that the condition is listed as "used." This armor must have already seen combat. Did the previous user survive?